Time

The Time tool allows you to add timestamps to tracks that don’t have them, or modify existing time data based on speed and distance calculations.

​

Overview

This tool is useful for:

• Adding timestamps to manually created routes
• Adjusting time data for planning purposes
• Correcting inaccurate timestamps from GPS recordings
• Calculating expected arrival times based on your pace

​

How Fields Are Linked

The Time tool maintains relationships between speed, time, and distance:

​

Speed and Moving Time

Speed and Moving Time are linked by the track’s distance:

• Change speed → recalculates moving time (distance ÷ speed)
• Change moving time → recalculates speed (distance ÷ time)

​

Start and End Times

Start and End times are calculated from moving time:

• Change start → recalculates end (start + moving time × ratio)
• Change end → recalculates start (end - moving time × ratio)

The “ratio” accounts for stopped time, calculated as (total time ÷ moving time).

​

Creating Timestamps from Scratch

For tracks without existing time data:

1. Set your expected speed (e.g., 15 km/h for cycling)
2. The tool calculates moving time based on your track distance
3. Pick a start date - time defaults to noon
4. The end date/time is calculated automatically

​

Editing Existing Timestamps

For tracks with existing time data:

• Change start → If end exists, recalculates speed and moving time from the time span
• Change end → Recalculates speed and moving time from the time span
• Change speed → Recalculates moving time, updates end time
• Change moving time → Recalculates speed, updates end time

​

The Reset Button

The X button resets all fields to the current values from your GPX file. Use this to undo your edits and reload the original data.

​

Applying Changes

Click Update Time Data to write your changes to the GPX file.